[CMake] [cmake-developers] CMake IR

[Bill Hoffman]

On 7/31/2015 12:33 PM, Ruslan Baratov wrote:
>      > rm -rf _builds
>      > cmake -H. -B_builds
>      > cmake -H. -B_builds -DA=ON
>      > grep '\<B\>' _builds/CMakeCache.txt
>      B:STRING=There is no A
>
> I'm not saying cache is a bad idea, I'm just saying that when users hit
> such kind of situations that's one of the reason why they said CMake is
> not a good script language. Just like CMake before CMP0054: user see
> `if("a" STREQUAL "b")` and think "okay, 'a' is not equal to 'b' so this
> condition is always false"... nope!
OK, it is a bit confusing.  One solution would be to treat the cache 
variables with some sort of separate look up.  Basically put all cache 
stuff into its own namespace.

Something like:
$CACHE{A}

Then, it would never be confused with the the variable A.  However, 
getting rid of the cache would not be something that could be done.

-Bill